GRTgaz S.A. is France’s main natural gas transmission system operator (TSO) and one of Europe’s largest. It plans, operates, and maintains the high‑pressure pipeline network that transports gas across France and through cross‑border interconnections, delivering to regional distributors, industrial sites, power generators, LNG terminals, and storage facilities. Its core services include third‑party network access, capacity allocation, metering, and real‑time system balancing and dispatch.
The company is also involved in developing infrastructure for low‑carbon gases, including enabling biomethane injection, preparing networks for hydrogen transport, and advancing power‑to‑gas initiatives (such as the Jupiter 1000 demonstrator). Through network development and market services, GRTgaz supports secure gas supply and the integration of renewable and decarbonized gases for industrial and energy users.